Gage



B. S. WILLIAMS.

GAGE- AEPLICATIQH. FILED JUNE 2]. I920.

1,377,238. Patented ay 10, 1921.

INVENTOR.

ATTO EY.

@NETEE STATES BENJAMIN S. WILLIAMS, 0F NASHVILLE, TENNESSEE.

GAGE.

Specification of Letters Patent.

Patented. May 10, 1921.

Application filed June 21, 1920. Serial No. 390,553.

To all whom it may concern:

Be it known that I, BENJAMIN S. W IL- LIAMS, citizen of the United States, reslding at Nashville, in the county of Davidson and State ,of Tennessee, have invented certain new and useful Improvements in Gages, of which the following is a specification.

This invention has particular reference to a gage for use in the measurement of piston or wrist pins, such pins being con structed to vary in diameter only slightly, the variation in a majority of cases bemg from one to sixteen one thousandths of an inch.

The principal object of the invention is to provide a gage which will facilitate instantaneous and accurate measurement of a pin of the character mentioned without the use of the conventional micrometer.

Another object is to construct a gage of the type mentioned of a single piece of material in such a manner that the various operations necessary in the manufacture are considerably expedited.

Other objects will more clearly hereinafter appear by reference to the accompanying drawings forming a part of this specification and wherein like reference numerals designate corresponding parts throughout the several views, in which Figure 1 is a side elevation of one form of the invention.

Fig. 2 is an end view of Fig. 1, and

Fig. 3 is a side elevation of another form of the invention.

Referring now to Fig. 1 the invention is shown to comprise a body formed of suitable sheet material such as may be particularly adapted to enable a punching operation and at the same time is capable of constructions involving minute measurements. This body, indicated by the refer ence character A, is formed with the elongated central opening B having side walls 1 and 2 which are graduated and diverge as will be more clearly set forth. The central opening B is enlarged at both ends as outlined by curved walls 3 and 4 which walls terminate by projecting inwardly to the side walls 1 and 2 above mentioned. By reference to the drawing it will be seen that the side walls 1 and 2, which comprise the measuring surfaces, are divided to represent predetermined units of measurements. It is preferred that the length of these walls shall be approximately one inch and that this distance shall be equally divided, as indicated by the graduations, into sixteen equal parts. Due to the divergence of the walls 1 and 2 each of the graduations represent oneone thousandth of an inch. Referring again to the end walls 3 and 4, attention is directed to the fact that the point a which is equi-distant between the first graduations is an equal distance from the central point of the curved wall 4, and this fact is also true with the similar point at the other end. From this it will be obvious that the standard size pin should exactly contact at three points at the upper end of the gage and that each different size pin, providing they vary oneone thousandth of an inch, will register with the next graduation. This divergence of the walls 1 and 2 is best shown in Fig. 2 at character 6 and in this View may also be seen the thickness of the material of which the gage is composed.

Referring now to Fig. 3 I have shown a gage capable of a greater number of measurements, these measurements being arranged in groups and each group bein similar to that illustrated in Fig. 1. t will also be seen from an examination of this modified form that the groups of graduations are spaced by the oppositely receding walls 7 and by the enlarged end openings formed by the curved end walls 8 and 9 which correspond to the end walls 3 and 4 of that form shown in Fig. 1.

The graduations 5 are arranged on opposite sides and terminate at the side walls, so that, when the gage is held in the left hand for manipulation, the graduations appear at the lower edge regardless of which side of the gage is turned toward the operator.

An extension 10 is formed at the upper end of the gage and is perforated to permit the insertion of a hook or ring in case it is desired to hang the device in a convenient place or on a ring with similar devices. 1

What I claim as new and useful and desire to secure by Letters Patent, is i A gage comprising a body formed with an elongated opening, the longitudinal Walls forming said opening diverging and being marked with groups of graduations along portions of each of the opposite faces, the unmarked portions of said Walls receding and terminating in a regular curved sur face, the most distant point in said curved BENJAMIN S. WILLIAMS. 

